![]() It prevents the music signal from passing through the biasing circuitry. Using ultra-linear circuit is fine, but honestly, more important to the Overture’s sound quality is our fine tunings, Kondo’s original parts as well as some new design features such as the Constant Current Biasing techniques. thanks to intermediate screed grid taps built into the primary of the OPT, part of the load is common to the screen grid and the plate). The 32W+32W output stage of the Overture is ultra-linear connected (ie. It was at that point we knew that we had reached our goal. Once we told them that they were listening to an E元4 Push-Pull circuitry, they were amazed about the quality level that can be retrieved from a pair of E元4. They thought that the circuit must be either Triode or Single-Ended design. At CES visitors praised the sound of the Overture as silky smooth, elegant yet with very clean and good dynamics. That’s what’s audiophiles keep constantly asking. Instead it’s a common Class AB push-pull design with fairly common EL-34s power pentodes that Mullard introduced in 1955. Overture ain’t a cool Class A single-ended amplifier with a fancy triode at the end. This is at least as significant a feature than the wire material. But don’t worry, winding skills is another very important factor in making transformers, and all transformers in Overture are skillfully hand-made by ANJ. Therefore we did not apply any annealing to the copper used at the Overture transformers. Applying annealing will oxidize it easily, which eventually lowers its purity. Copper, on the other hand, delivers its best audio performance in its high purity form. Simply put, using “age annealing” means to find the best balance point when applied to silver cables. This generates a lot of problems for the cable manufacturing process resulting in a lower audio performance. First of all, silver is a relatively soft material, which will “self anneal” with time, and too much additional annealing makes it “over” soft.
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